Species Account

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Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Scarce and restricted resident.

Local Record: Grade 3   See here for explanation

Flight time: One generation, Aug-Sep.

Forewing: 11-16mm.

Foodplant: Common Reed.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded188719831887
Year last recorded201120092011
Number of records27038616
Number of individuals765741678
Unique positions7211166
Unique locations688152
Adult records22937532
Immature records408

For the region, we have a total of 616 records from 152 sites. Earliest record on file is in 1887.


2370 Twin-spotted Wainscot 03
© Julian Francis
2370 Twin-spotted Wainscot 02
© Debra Saunders
2370 Twin-spotted Wainscot 01
© Gordon Hopkins

Species Account

For further information refer UK Moths.

Davey, P., 2009: A local species restricted to southern England, east Anglia and the south coast of Wales, the larva feeding within the inner stems of common reed (Phragmites australis). In Dorset, the moth is common within all the larger reedbeds. It is recorded regularly from the Fleet, Radipole, Lodmoor, Poole Harbour and Christchurch Harbour. It also occurs in fen habitat on the River Frome and the River Piddle to the west of Wareham, although there are no records of the moth from the extensively worked reedbed at Morden Bog. The following examples indicate colonisation of small pockets of common reed in coastal localities too: Punfield Cove, larva in a common reed stem on 8 June 1887, one larva plus one pupa on 30 June 1896, twelve larvae on 6 June 1898 (Reverend E Bankes), two pupae from common reed stems on 23 July 1895 (Reverend E Bankes, E Nevison).

There are many additional records of moths that may have originated from small pockets of common reed growing in wetland near trap sites but more likely these are the result of dispersal, indeed many singletons appeared far from any reedbed across the county during the intense heatwave of August 2003.

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